JJ

Noun

Josephson junction (plural Josephson junctions)

1. A weak insulating barrier between two superconductors, used as an ultrafast switch.

Noun

J (plural Js or J's or JJ)

1. (slang) (plural Js or J's) A marijuana cigarette (abbreviation of joint).
   • I stepped outside to smoke myself a J.1980 July, Paul Simon, “Late in the Evening”, in One-Trick Pony
2. In the name of a serial publication: abbreviation of Journal.
   • "Custody or upbringing" is regarded as including access; yet in B. v. B. & F. above no regard was paid to the welfare of the infants which was irrelevant to the particular issue with which the court was concerned—namely whether children were "children of the family". But the effect was to deprive...1969, The Law Commission, Family Law: Report on Financial Provision in Matrimonial Proceedings (Law Com. No. 25), London: Her Majesty's Stationery Office, →OCLC, paragraph 29, note 57
3. (in plural, slang) (plural Js or J's) an Air Jordan shoe
   • Don't pay no mind, Antwon, it's just an angry-ass J...2022 December 21, Ghetto Smosh, 1:57 from the start, in MY J’S CAN TALK!?!?, via YouTube, archived from the original on 05 Jun 2023

See all 9 meanings of j